They wanted to explore what was being the horizon.
The correct answer is b
In the nineteenth century the knight of labor aimed to bring all types of workers to a union to improve working hours and working conditions for laborers. It aimed at uniting skilled and unskilled workers into a union.However, unlike the knight of work the american federation of labor focused on improving of wages, working hours and also avoiding general social reforms.
Actually they are right, because in the period in the U.S. history after the Civil War and Reconstruction, lasting from the late 1860s to 1896, is referred to as the “Gilded Age.” This term was coined by Mark Twain and Charles Dudley Warner in their book The Gilded Age: A Tale of Today, published in 1873.
